Cognitive Scaffold

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MENTAL MODEL · M5861

Offense-Defense Balance

Offense-Defense Balance
CollaboratemediumInternational Relations
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Updated 2026-08-09

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INTRODUCTION

English translation pending.

CORE DEFINITION

Developed in international relations by Robert Jervis and others, the theory argues that when offense has the advantage over defense, states are tempted to strike first and wars are more likely and harder to end. When defense dominates, the status quo is more stable but conflicts can settle into prolonged stalemates. The core claim is that technology and geography, not intentions alone, set the level of competition. The qualification is that the balance is difficult to measure and shifts when technology changes.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Use Balance Assessment: Judge whether attacking or defending is cheaper in your market before setting strategy. - Use Moat Building: When defense dominates, invest in brand, network effects, and switching costs. - Use Reassessment: Recheck the balance after a technological change, since it can flip the correct strategy.

anchor

Anchor fast decisions

When seizing value is cheaper than protecting it, each party has an incentive to move first, so competition becomes intense and agreements are hard to sustain. When protection is cheaper, incumbents can hold position and entrants must overcome durable advantages, which reduces the intensity of conflict. Because the balance is set by technology and structure rather than by preference, the same actors behave differently when it shifts.

MINIMUM ACTION

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/Security_dilemmaZH · Explicit
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